<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>
<body>
    <div id="app">
        <button @click="flag = !flag">{{ flag?'隐藏':'显示' }}</button>
        <p v-if="flag">v-if</p>
        <h1 v-show="flag">v-show</h1>



    </div>
    <script>
        new Vue({
            el:"#app",
            data(){
                return {
                    flag:true
                }
            }
        })
    </script>
</body>
</html>